The S12 is replacing an old and now faulty Elan HDC 2000 and will initially being controlled by the existing Z100/150 keypads, to be replaced with other control options over time. I was testing using the S12 front panel controls, to simplify troubleshooting.
The current environment requires the use of both variable and fixed outputs, to accommodate connection to a separate audio system and outdoor speakers with their own seperate volume controls.
Via Tools was used to program the system and keypads.